esptool.FatalError: Timed out waiting for packet header.

Projects Programming
1

Hello!!!

In my project i'm using Lolin ver 0.1 nodemcu v3 with CH340G driver, and baut rate of 9600 and 115200 both. for reading data from water meter using rs485 mod-bus protocol.

But after few times of uploading code we get some trouble in flashing it, and my code will run max 2 times only and after that i will throwing error like this....
Even though i am not able to flash a simple code (blinky led or message display etc.)

esptool.py v2.6
2.6
esptool.py v2.6
Serial port COM11
Connecting....
Chip is ESP8266EX
Features: WiFi
MAC: 2c:f4:32:20:bc:95
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Compressed 261856 bytes to 191262...

Writing at 0x00000000... (8 %)
Writing at 0x00004000... (16 %)
Writing at 0x00008000... (25 %)Traceback (most recent call last):
File "C:\Users\User\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2/tools/upload.py", line 25, in
esptool.main(fakeargs)
File "C:/Users/User/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/2.5.2/tools/esptool\esptool.py", line 2698, in main
operation_func(esp, args)
File "C:/Users/User/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/2.5.2/tools/esptool\esptool.py", line 2158, in write_flash
esp.flash_defl_block(block, seq, timeout=DEFAULT_TIMEOUT * ratio * 2)
File "C:/Users/User/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/2.5.2/tools/esptool\esptool.py", line 104, in inner
return func(*args, **kwargs)
File "C:/Users/User/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/2.5.2/tools/esptool\esptool.py", line 632, in flash_defl_block
self.ESP_FLASH_DEFL_DATA, struct.pack('<IIII', len(data), seq, 0, 0) + data, self.checksum(data), timeout=timeout)
File "C:/Users/User/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/2.5.2/tools/esptool\esptool.py", line 354, in check_command
val, data = self.command(op, data, chk, timeout=timeout)
File "C:/Users/User/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/2.5.2/tools/esptool\esptool.py", line 332, in command
p = self.read()
File "C:/Users/User/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/2.5.2/tools/esptool\esptool.py", line 277, in read
return next(self._slip_reader)
File "C:/Users/User/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/2.5.2/tools/esptool\esptool.py", line 1877, in slip_reader
raise FatalError("Timed out waiting for packet %s" % waiting_for)
esptool.FatalError: Timed out waiting for packet header

2

tiwarialok:
esptool.FatalError: Timed out waiting for packet header

This is not an Arduino programming problem. The ESP8266 and ESP32 are not Arduino boards.

When I search for esptool.FatalError: Timed out waiting for packet header with DDG I get lots of hits. I presume the same will be true with Google.

...R

3

Do you have the RS485 chip connected to the board when you are trying to upload ?

4

Yeah,

i will checked out both the conditions ie flashing with rs485 connection or without rs485. means that removing all the connections as well.

5

Active connections to the serial-port should be removed, as well as connections that could interfere with the boot mode.